Muaj ntau hom roj silicone, suav nrog cov roj methyl silicone, hydrogen - muaj cov roj silicone, hydroxyl silicone roj, thiab cov roj amino silicone. Kab lus no muab cov lus qhia luv luv rau cov qauv, cov khoom, thiab kev tshawb fawb txog cov roj methyl silicone (PDMS) thiab hydrogen- muaj cov roj silicone.
Polydimethylsiloxane (PDMS), tseem hu ua methyl silicone roj los yog dimethyl silicone roj, yog ib tug neeg sawv cev ntawm organosilicon hydrophobic agents. Nws cov hydrophobicity yog los ntawm kev hloov pauv ntawm hydrophobic methyl pawg thiab hloov tau yooj yim silicon-oxygen qaum hauv nws cov molecule. Thaum PDMS tau hloov kho ntawm qhov chaw fiber ntau los ntawm impregnation lossis co- cov txheej txheem spinning, cov txheej txheem tsis tshua muaj zog hydrophobic yog tsim rau ntawm cov fiber ntau membrane kom ua tiav hydrophobic functionality. Cov kws tshawb nrhiav tau ua tiav PA / PDMS nanofiber daim nyias nyias los ntawm hauv -situ qhia PDMS rau hauv PA spinning kev daws teeb meem siv ib qho - cov txheej txheem electrospinning. Cov ntaub ntawv no nthuav tawm cov dej siab tsis kam ntawm 28.3 kPa thiab noo noo permeability ntawm 3.77 kg m⁻²d⁻¹, ua kom pom cov dej tsis zoo thiab ua pa.
Polymethyl hydrosiloxane (PMHS), tseem hu ua hydrosilicone roj los yog hydrosilane, yog tus sawv cev ntawm kev ua haujlwm organosilicon tebchaw. Nws muaj zog Si-H daim ntawv cog lus hauv nws cov qauv molecular muab cov khoom sib txuas tseem ceeb. Qhov sib xyaw no feem ntau tshwm sim raws li daj ntseg daj lossis xim tsis muaj pob tshab kua nplaum, uas yog nws cov insolubility hauv dej thiab zoo heev thermal stability thiab tshuaj inertness.
Raws li cov xwm txheej tshwj xeeb, xws li nrog Pt catalyst, PMHS tuaj yeem ua tau zoo raws li tus neeg sawv cev sib txuas ntxiv rau- hom kua roj hmab silicone, txhim kho cov dej tsis zoo ntawm silicone. Los ntawm kev sib xyaw PMHS nrog PDMS thiab dhau los ua cov tshuaj tiv thaiv ntau ntxiv nrog rau siab -kub kho cua sov, hydrolysis, thiab condensation, cov qauv kab molecular saw tau rov tsim dua rau hauv cov qauv sib txuas sib txuas, zoo heev txhim kho cov khoom siv sib xyaw ntawm cov khoom sib xyaw. Tsis tas li ntawd, nws tsim cov yeeb yaj kiab zoo heev thiab muaj dej tsis zoo hydrophobic ntawm cov fiber ntau, ua rau cov khoom siv nrog cov dej tsis zoo thiab ruaj khov. Cov cuab yeej no ua rau PMHS muaj txiaj ntsig hauv kev kho dej tsis zoo ntawm textiles. Textiles kho nrog PMHS khaws lawv qhov qub kev nplij siab thiab ua pa thaum ua tiav cov dej tsis zoo. Cov kws tshawb fawb tau qhia PMHS hauv qhov chaw rau hauv PU spinning tov los npaj PU / PMHS nanofiber membranes los ntawm electrospinning. Tom qab kev kho cua sov, cov ntaub ntawv fiber ntau muaj cov dej siab tsis kam ntawm 54.1 kPa thiab noo noo permeability ntawm 9.5 kg m-2 d1, thiab kuj muaj cov dej tsis zoo thiab noo noo permeability.
